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Feeding my 85 gallon tank water heater with a tankless water heater

2 years ago

This may be a silly idea, but I just had my basement finished and got a Rinnai M160CN installed but already had a 2 year old 85 gallon tank water heater. I am not currently using the Rinnai for the hot water and am going to be upgrading my 3 of my bathrooms to have larger volume rain showers. Do you think it would be helpful to use the Rinnai to feed my tank hot water heater to get more hot water?

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